ilovepickles930
04.09.2020 •
Mathematics
If x = 5 – 2V6 , then find the value of x² + 1 - 2
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Ответ:
::48 - 20V6
Step-by-step explanation:
Here,
x= 5 - 2V6
Now,
x^2 +1-2
= (5 - 2V6) ^2 +1 - 2
= 5^2 - 2*5*2V6 + (2V6)^2 +1 - 2
= 25 - 20V6 +4*6 +1 - 2
= 25 - 20V6 +24 +1 - 2
= 25 +24 +1 - 2-20V6
= 48 - 20V6
Ответ:
-8
Step-by-step explanation:
y=8-2x
y=8-2(8)
y=8-16
y= -8